High-Temperature Erosive Behavior of Plasma Sprayed Cr{sub 3}C{sub 2}-NiCr/Cenosphere Coating
- National Institute of Technology Karnataka, Department of Mechanical Engineering (India)
This research examines the deposition of Cr{sub 3}C{sub 2}-NiCr/cenosphere and Cr{sub 3}C{sub 2}-NiCr coatings on MDN 321 steel through the process of plasma spray. In this process, the solid particle erosion test is established at 200, 400, 600 °C with 30° and 90° impact angles. Alumina erodent is adopted to investigate the erosive behavior of the coating at higher temperatures. The properties of the Cr{sub 3}C{sub 2}-NiCr/cenosphere coating are established based on the microhardness, the adhesive strength, the fracture toughness, and the ductility. To quantify volume loss as a result of erosion, an optical profilometer is used. At higher temperature, decrease in the erosion volume loss of Cr{sub 3}C{sub 2}-NiCr/cenosphere and Cr{sub 3}C{sub 2}-NiCr coatings is observed. The erosion-resistive property of Cr{sub 3}C{sub 2}-NiCr/cenosphere coating is higher than that of MDN 321 steel by 76%. This property is influenced by high-temperature stability of mullite, alumina, and protective oxide layer that is formed at elevated temperatures. The morphology of eroded coating discloses a brittle mode of material removal.
- OSTI ID:
- 22860599
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 4 Vol. 27; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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